Commits for braney

v303_base to v304_preview (2014-07-21 to 2014-07-28) v304

• add instructions to build knownToMalacards
  • src/hg/makeDb/doc/ucscGenes/hg38.ucscGenes15.csh - lines changed 10, context: html, text, full: html, text
• in hubCheck, don't check for "type" field unless there's a bigDataUrlfield. This prevents errors on view and composite blocks in the
  trackDb.txt files.
  
  • src/hg/lib/trackHubCheck.c - lines changed 2, context: html, text, full: html, text
• removing the code that removes udcTimeout from the cart after meetingwith folks here who are concerned this will be too big of a burden to
  hub developers. See #13675 for a discussion of this.
  
  • src/hg/hgTracks/hgTracks.c - lines changed 1, context: html, text, full: html, text